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Old 08-16-2010, 06:07 PM
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AeroTech AeroTech is offline
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Default Redesigned J1999N-P Certified by TMT

AeroTech Information Release

8/16/10

Redesigned J1999N-P Certified by TMT


The J1999N-P reload for the RMS-54/1280 motor hardware has been redesigned by AeroTech and certified by Tripoli Motor Testing (TMT) as the J1799N-P.

The J1799N-P replaces the J1999N-P that was decertified by TMT and withdrawn from sale after a number of failures were experienced by consumers during LDRS-29. The J1799N-P delivers a total impulse of 1066 N-sec over a burn time of 0.60 seconds with a peak thrust of over 476 pounds.


Aaron Stanley`s 54mm minimum diameter WhipLash flying on a J1799N-P reload at Aeronaut 2010. Photo by Kenneth.

AeroTech has produced a "repair kit" that consumers possessing unfired J1999N-P reloads manufactured prior to July 2010 will be able to obtain at no cost through any authorized AeroTech high-power dealer. This kit includes three replacement propellant grains, a new nozzle, grain spacer o-rings and revised instructions. Customers are requested to return their unfired J1999N-P nozzle(s) and instructions to their dealer to receive the repair kit.

The complete J1799N-P reload kit will be available for purchase from AeroTech’s dealers at a suggested retail price of $119.99 each. AeroTech anticipates shipments to its dealers to begin in approximately 2 weeks. The J1799N-P is being submitted to the California Office of the State Fire Marshal (OSFM) for approval of sale & use in California.

Motor instructions and an assembly drawing for the J1799N-P are now available for download in PDF format from the AeroTech Resource Library at http://www.aerotech-rocketry.com.

AeroTech Consumer Aerospace has a page on Facebook! Follow the very latest AeroTech news, information, product developments and testing at http://www.facebook.com/pages/AeroT...ce/159005948954


AeroTech Consumer Aerospace is a division of RCS Rocket Motor Components, Inc., Cedar City, UT.
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For warranty questions & issues please contact Karl at warranty@aerotech-rocketry.com
For customer service questions & issues please contact Jenn at customerservice@aerotech-rocketry.com

AeroTech Consumer Aerospace
Division of RCS Rocket Motor Components, Inc.
2113 W 850 N
Cedar City, UT 84721
435-865-7100 (Ph)
435-865-7120 (Fax)
http://www.aerotech-quest.com
http://www.rocketmotorparts.com.com
http://www.specificimpulse.com

Last edited by AeroTech : 08-17-2010 at 03:56 PM.
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Old 08-17-2010, 03:30 PM
Jerry Irvine's Avatar
Jerry Irvine Jerry Irvine is offline
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Someone post a close-up photograph of the end of one of the new grains. I want to see if they fixed the real problem or if it will reoccur.

Maybe a photo of old and new side by side would be instructive.

Thanks.

The file referred to as instructions, "ba746bb3-55b0-4e70-804f-3f90e49c8e25_54_1280n_in_20075.pdf" states in part, "DO NOT use Copper thermite to ignite a Warp-9 propellant motor." Comments made at LDRS-29 indicated aftermarket igniter method was not a factor in the many failures there. I agree. So why the instructions change?

Jerry

Last edited by Jerry Irvine : 08-17-2010 at 04:03 PM.
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